Improvement in thrashing-machines



4Sheets--Sheet1. A. G. HAGERSTRUM. Thrash'ing-Machines. 42,462. PatentedSeptember 2,1873.

4 Sheets--Sheet 3.

A. G. HAGERSTBUM. Thrashing-MachinPs.

N0. i42,462. PatentedSeptember2J873 4 Sheets-*Siieet 4.

A". a. HAG ERSTROM. Thra s'hing-Machines. .No. 142,462.PatentedSeptember2,1873.

ANDREW e. HAGERSTROM,

PATENT OF RED WING, MINNESOTA.

IMPROVEMENT IN THRASHING-MACHINES.

Specification forming part of Letters Patent No- 142,462, datedSeptember 2, 1873; application filed November 23, 1872 Figure 1 is aplan view of the upper side of my device as arranged for use. Fig. 2 isan elevation of the rear end of the same. Figs. 3 and 4 are elevationsof opposite sides of said device. Fig. 5 is a vertical central sectionof the same upon a line extending from front to rear. Fig. 6 is a planView of the upper side of a portion of the frame, showing the meansemployed for connecting the horse-power to or with the same; and Fig. 7is a perspective view of said parts.

Letters of like name and kind refer to like parts in each of thefigures.

My invention is designed to increase the efficiency and durability ofgrain-thrashers; and it consists in the relative arrangement of thebeater, concave, transfercarrier, grainsieves, and fan, substantially asand for the purpose hereinafter shown. It consists, further, in themeans employed for tightening the belts employed for driving the beaterand the fan, substantially as is hereinafter shown and described. Itconsists, finally, in the means employed for connecting the framebars ofthe horse-power to or with theframe of the machine, substantially as andfor the purpose .hereinafter specified.

In the annexed drawing, A and A represent the sills of the machine, fromeach of which extend vertically upward two or more posts, B, that areconnected together at their upper ends by means of a top rail, 0. Thesections thus constructed are connected together by means of suitablehorizontal cross-barsl), and form the frame of the machine. Extendinghorizontally across each side of the frame, about one-third the distancefrom its upper edge, is a rail,- E, which extends from near the rear endof the machine forward slightly beyond its longitudinal center, theobject of which rails is to furnish support for the bearings of theprincipal operative mechanism. J ournaled within suitable boxes g, thatare secured to or upon the rails E, near the rear end of the machine, isa shaft, G, upon which is placed an open beater or breaker cylinder, H,of usual construction. Above the beater-cylinder is placed a concave, I,(constructed, preferably, of wood,) which, as seen, is composed of aseries of overlapping staves, i, that are so arranged as to present eachone edge toward the motion of said beater, the series of annular stepsthus formed engaging with the grainstalks as they pass into the machine,and, in connection with the arms of said beater, effectually breakingthe same and liberating the grain. A table, K, attached to the rear endof the machine and extending inward beyond the rear end of the concave,enables the grain to be fed inward to the breaker. Journaled upon theupper side of the rail F, near the rear end and slightly forward of thelongitudinal center of the frame, are two shafts, 1, upon each of whichis secured a cylinder, L, as shown. Around the cylinders L is stretchedan endless belt, M, formed of a series of longitudinal strips, m, offlexible material, placed equidistant from each other, and securedinrelative position by means of a series of cross-bars, m, the wholeforming an open-work carrier, which, receivin g the straw from thebreaker, will carry the same forward beyond the sifting devices with-'out interfering with the free downward pas sage of the grain.

In order that the contents of the carrier M may be thoroughly shaken upand all grain dislodged therefrom, two or more shafts, n, are Journaledwithin the sides of the frame, slightly above the shafts l, and are eachprovided with two cross-bars, N, which are connected together at theirends by means of suitable rods 11, the radial distance of said rods fromsaid shafts a being greater than'thc space between the latter and theupper portion of the carrier M. As thus arranged, it will be seen, thatif the shafts n are caused to revolve, each rod n, as it passes theupper vertical center, will raise the carrier M, and

give to the load of the latter a shake that will cause any adheringgrain to be dislodged. A second straw carrier or elevator is formed byan endless belt, 0, which is provided with a series of cross-bars, 0,and passes around two rollers, I, one of which rollers is journaled atthe lower side and longitudinal center of the frame, while the secondroller is journaled at the front end and upper side of the same, thearrangement of said rollers being such as to give to said carrier anupward and forward inclination of about forty-five degrees.

Within the lower part of the frame, near its rear end, are placed thescreening devices, which are constructed as follows: A shoe, Q, havingthe form shown in Fig. 5, is provided within its lower portion with twoor more screens, It, that are arranged horizontally, in the usualmanner, while at its upper side are placed two guide-boards, q, whichextend outward and upward toward the end of the machine, and serve tocatch the falling grain and direct it upon said screens. The shoe Q issuitably suspended from the rails F by means of straps or links S, whichpermit the former to move freely in a transverse direction, said motionbeing communicated by a disk, T, which is secured upon the end of ashaft, t, and is connected to or with said shoe by means of a pivotedanglelever, U, and two rods, a, all in the usual manner. A spout, V,provided at one end of the shoe Q, enables its contents to be dischargedinto a suitable receptacle. Between the shoe Q and the front end of themachine is placed a fan, W, which is suitably attached to or upon ashaft, 10, and is inclosed at its upper ends, lower and front sides, bymeans of a casing, X. Openings for the admission of air to the fan areprovided in and through the ends of its casing, while at the rear sideof the latter is left an opening, .70, for the passage of the air-blastto the screens R, the rear and front sides of the shoe Q being leftopen, so as to afford free ingress and egress to said blast. Directlybelow the rear end of the elevator O is placed a tailings receptacle ordrawer, Y, which receives such grain as may pass over the screens withthe chaff.

Power is applied to the machine through a shaft, Z, that is journaledwithin the same near the upper side and slightly forward of thelongitudinal center of the frame, and is provided upon one of itsprojecting ends with a gear-wheel, A, that meshes with and moves apinion, B, which is secured to or upon the corresponding end of theforward shaker-shaft a. Outside of the pinion B, upon the shaft n, isplaced a band-wheel, G, from which a belt, D, extends to and around apulley, E, that is secured upon the shaft G of the breakercylinder, andimparts motion to the same. The belt D passes over the pulley F, that issecured upon the end of the shaft t opposite to the disk T, and impartsmotion to said pulley, shaft, and disk, and through the same to thescreen-shoe. Upon the end of the shaft a opposite to that upon which areplaced the pinion ]3 and band-wheel C is affixed a double baud wheel, G,from the inner portion of which a band, H, passes to and around asimilar band-wheel, I, that is attached to the end of the second shaft,a, and causes the same to revolve. A second belt, K, passes from theouter portion of the bandavheel G to and around a corresponding doublewheel, L, that is attached to the end of the forward carrier-shaft l,and, by rotating said wheel and shaft, causes the carrier-belt to bemoved in the desired direction. The carrier or elevator O is operated bymeans of a belt, lVl, that extends from the inner portion of the doublepulley or wheel L to and around a pulley, N, that is attached to theprojecting end of the shaft 1) of the forward roller 1. The fan I isoperated by means of a pulley, O, that is attached to the projecting endof its shaft w, and is connected by a belt, 1?, with a double pulley, Q,that is suitablyjour' naled within a lever, B, which lever is pivoted atits forward end to or upon the side of the machine in such position asto bring said pulley Q directly over the belt D. As thus arranged, bydepressing the rear end of the lever It the outer portion of the pulleyQ will be caused to bear upon and receive motion from the belt D, whichmotion is communicated through the belt P and pulley O to the fanshaft.The lever It and pulley Q operate to tighten the belt D in addition tothe office above described. In order that the belts used for operatingthe carrier and elevator may be tightened as desired, two pulleys, s,are journaled within opposite ends of a suitable frame,

S, and the latter attached to or upon the side of the frame in such amanner and position as to bring said pulleys directly over said belts,and to enable the former to be raised .or lowered at will. The platformT, upon which the operator stands, is hinged to the rear end of themachine, so as to be capable of folding upward against the same when notin use. zontal position said platform is in part supported by means ofthe projecting ends of its side rails t, which engage with suitablestuds or pins that extend laterally outward from the sides of the frame.A further supportis afforded by means of two brace-rods, U, which arepivoted to the sides of the machine, and, extending downward andrearward, have their hooked ends locked into suitable staples u thatextend outward from the ends of the platform. The feeding-table K isconnected with the frame in a like manner to that described, and issupported in horizontal position by means of two brace-rods, W, arrangedas in case of the platform. A supplementary table, X, is placed at eachend of the table K, when desired, and is connected therewith by means oftwo or more studs or pins which project downward from the end and lowerside of the former into corresponding openings in the latter. A hook, Y,pivoted upon the frame side and engaging with the upper side and innercorner of the table X, holds the latter in engagement with the principaltable, while When turned downward to a hori-' the brace-rod W, swungoutward and engaging with a pin or staple, w, attached to the forwardedge of said table X, furnishes the necessary support for the outer endof the same. The cover Z of the frame is made in suitable sections andhinged at such points as are desired, so as to render the interiorof themachine accessible.

Th'e horse-power intended for use with this machine has its upperandlower portions connected to or with the machine-frame, so as toinsure their relative positions, by the follow-' ing-described means:The frame-bars A of said horsepower are each provided with a metal rod,B, which is securely attached to or upon one side of the same, and,extending forward beyond its end, is provided with a short arm, b, thatextends vertically downward. When in position, the end of the bar A isplaced against the sill or rail of the frame of the machine, with thehooked end I) of the rod 13" extending into a recess, 0, that is formedwithin said sill or rail, and engaging with one end of a metal link, D",which rests within and extends through a corresponding transverse slotformed within the same. Within the opposite or inner end of the link Dis placedfa wedge-shaped key, E, which, when driven downward, draws saidlink inward so as to confine the hooked rod B and its bar A closelyagainst the sill or rail. By removing the key E" the link D is loosenedso as to permit it to be sufficient] y withdrawn to liberate the hookedrod and permit its removal.

Having thus fully set forth the nature and merits of my invention, whatI claim as new 1s- 1. The relative arrangement of the beater, concave,transfercarrier, grainsieves, and fan, when constructed to operatesubstantially as and for the purpose shown.

2. The pulley Q, journaled within the pivoted lever B, and, inconnection with said lever, combined with the frame of the machine andwith the beater and fan-belts, substantially as and for the purposeshown and described.

3. The means employed for connecting the horse-power frame bars A to orwiththe frame of the machine, consisting of the hooked rods B and b, thelink D, and the key E, when the same are combined with said partssubstantially as and for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this25th day of April, 1872. u

A. G. HAGERSTBOM.

Witnesses:

GEo. S. PRINDLE, EDM. F. BROWN.

